Revenue - Contract Assets and Contract Liabilities (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Contract With Customer, Contract Assets and Contract Liabilities [Line Items]
Contract assets, impairment	$ 0		$ 0
Revenue recognized related to amounts that were included in deferred revenue	16,200,000	$ 17,400,000	$ 76,000,000.0	$ 75,400,000
Minimum
Contract With Customer, Contract Assets and Contract Liabilities [Line Items]
Transferred to receivables period			12 months
Maximum
Contract With Customer, Contract Assets and Contract Liabilities [Line Items]
Transferred to receivables period			24 months
Prepaid Expenses and Other Current Assets
Contract With Customer, Contract Assets and Contract Liabilities [Line Items]
Contract assets, current	36,700,000		$ 36,700,000		$ 18,500,000
Other Noncurrent Assets
Contract With Customer, Contract Assets and Contract Liabilities [Line Items]
Contract assets, noncurrent	$ 58,300,000		$ 58,300,000		$ 39,300,000